The Takigakure ninja was forced to take extreme risks and probe his limits while desperately erasing traces and hiding himself, so he ended up becoming an enemy of Konoha and dying like this. Even if he was a Jinchuriki—or perhaps precisely because he was a Jinchuriki... One had to admit that Shimura Danzō was a specialist in internal strife. The moment a Jinchuriki released the Tailed Beast, his fate was already sealed.
However, Shimura Danzō had originally hoped that the other party would become a "time bomb," so he needed to take control of the Jinchuriki's seal. Complete Tailed Beast Transformation and fully releasing the Tailed Beast were two different concepts. Otherwise, he should have simply arranged for the Seven-Tails to completely separate from the Jinchuriki. That way, the Takigakure Jinchuriki would have died in a much safer manner, and Danzo would have faced even less trouble.
Regardless, since the other party had believed Danzo's words and chosen to cooperate with him, the risks of this matter had been controllable. Therefore, this had been an act of "causing trouble" that complied with the rules of safe operation.
Of course, the Jinchuriki's sudden rampage had been beyond Danzo's expectations. This Konoha scapegoat king had arranged at least two attacks. The first had been the attack launched against Yuhara by a specialized Aburame Ninja—a move by Danzo to once again eliminate Yuhara, who was completely beyond his control. Relying on that specially modified Aburame Ninja, and taking advantage of the fact that Yuhara was unprepared, the ambush had had a chance of succeeding. If Yuhara had not been cautious enough, he could indeed have suffered a disastrous failure.
The second attack had been launched against the Third Hokage by manipulating the Jinchuriki's loss of control. In the current shinobi world, there were